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Materia Medica.

Part II.

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cerate, spread very thin upon linen. But its action is te-dious. He also fumigated cancerous sores with sulphuret ofarsenic, with a view to destroy their intolerable fetor, withgreat success. Le Febure washed cancerous sores frequently,in the course of the day, with a solution of four grains of ar-senious acid in two pounds of water. Arnemann recommendsan ointment of one drachm of arsenious acid, the same quan-tity of sulphur, an ounce of distilled vinegar, and an ounce ofointment of white oxide of lead, in cancerous, and obstinateill-conditioned sores, and in suppurated scrofulous glands.The arsenious acid has even been applied in substance, sprink-led upon the ulcer. But this mode of using it is excessivelypainful, and extremely dangerous. There have been even fa-tal effects produced from its absorption.

The principal thing to be attended to in arsenical applica-tions is to diminish their activity to a certain degree. Theythen cause little irritation or pain, but rather excite a gentledegree of inflammation, which causes the diseased parts to bethrown off, as if they were foreign substances, while they havethe peculiar advantage of not extending their operation late-rally.

No other escharotic possesses equal powers in cancerous af-fections ; but, unfortunately, its good effects often do not gobeyond a certain length ; and if in some cases it effects a cure,in others it must be allowed that it does harm. While it hasoccasioned very considerable pain, it has given the parts nodisposition to heal, the progress of the ulceration becomingeven more rapid than before.

Internally, it may be exhibited in the form,J. Of arsenious acid dissolved in distilled water, in the pro-portion of four grains to a pint. A table spoonful ofthis solution, mixed with an equal quantity of milk, anda little syrup of popies, is directed to be taken everymorning lasting, and the frequency of the dose graduallyincreased until six table spoonfuls be taken daily. M. LeFebure's method of curing cancer.

2. Of arsenite of potass. Sixty-four grains of arseniousacid, with an equal quantity of carbonate of potass, areto be boiled together until the arsenious acid be dissolv-ed, when as much water is to be added as will increasethe solution to one pound. Of this, from two to twelvedrops may be given once, twice, or oftener, in the courseof a day. Dr Fowler's method of curing intermittentfever.

3. Of arseniate of potass. Mix well together equal quan-tities of nitrate of potass, and of pure arsenious acid ;

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